Preheat oven to 350°F. Combine all the ingredients except the zucchini in a large bowl and mix thoroughly. Add the zucchini and gently stir to separate and coat each slice.

Spread the mixture in a lightly buttered 12x9x2 pan and bake until it is golden brown and pulls away slightly from the pan at the edges, 20 to 25 minutes. Let cool 10 to 15 minutes, then cut into 1-inch squares.

Makes about 100 squares.

Make-Ahead Factor

The dish can be made 2 days ahead and kept covered and refrigerated. Cut into squares and warm them in a 300°F oven for 6 to 8 minutes before serving.